# 蜂鸣器演奏音乐的两个要素就是声音频率、声音持续时间，分别对应乐谱中的音调、节拍。
from machine import Pin,PWM
import time 

beeper = PWM(Pin(14))  #定义PWM波端口为GPIO22 # 通过Pin对象来创建PWM对象
tone = [247,262,294,330,349,392,440,494,523,587,659,698,784,1000]  # 设置蜂鸣器的声音大小，由ADC值来控制，蜂鸣器声音范围0-1023
# 音调
music=[   
  5,5,6,8,7,6,5,6,13,13,
  5,5,6,8,7,6,5,3,13,13,
  2,2,3,5,3,5,6,3,2,1,
  6,6,5,6,5,3,6,5,13,13,

  5,5,6,8,7,6,5,6,13,13,
  5,5,6,8,7,6,5,3,13,13,
  2,2,3,5,3,5,6,3,2,1,
  6,6,5,6,5,3,6,1,

  13,8,9,10,10,9,8,10,9,8,6,
  13,6,8,9,9,8,6,9,8,6,5,
  13,2,3,5,5,3,5,5,6,8,7,6,
  6,10,9,9,8,6,5,6,8
]

# 节拍
beat = [
  2,4,2,2,2,2,2,8,4,4,
  2,4,2,2,2,2,2,8,4,4,
  2,4,2,4,2,2,4,2,2,8,
  2,4,2,2,2,2,2,8,4,4,

  2,4,2,2,2,2,2,8,4,4,
  2,4,2,2,2,2,2,8,4,4,
  2,4,2,4,2,2,4,2,2,8,
  2,4,2,2,2,2,2,8,

  4,2,2,2,4,2,2,2,2,2,8,
  4,2,2,2,4,2,2,2,2,2,8,
  4,2,2,2,4,2,2,5,2,6,2,4,
  2,2,2,4,2,4,2,2,12
]
'''
# 方法一：
i = 0
while True:
    speed = beat[i]  # 设置播放速度，speed值越小，等待时间越短，播放速度越快
    voice = tone[music[i]]  # 音调大小
    beeper.init(freq=voice)  # PWM初始化并设置PWM频率
    time.sleep(speed)  # 等待时间
    print(voice)  # 打印出ADC值
    i = i + 1  # i自增加1
    if i > len(music) - 1:  # 如果i的值大于music列表的长度
        beeper.deinit()   # 关闭PWM
        break  # 跳出循环
'''
# 方法二：
for i,j in zip(music,beat):
    if(music == []):  # 判断列表是否为空
        beeper.duty(0)  # 设置PWM波的占空比为0
    else:
        beeper.duty(512)  # 设置PWM波的占空比为512，即50%
        beeper.freq(tone[i-1])
    time.sleep(0.12*j)  # 控制节拍速度
    beeper.duty(0)
    time.sleep(0.15)
